Sole-leveling machine



No. 6l0,3l4. Patented Sept. 6, I898. E. E. WINKLEY.

SOLE LEVEL'ING MACHINE.

(Application filed Mar. 8, 1897.)

'No Model.)

2 Sheet'sSheet l.

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No. 6|0,3|4. Patented Sept. 6, 1898.} E. E. WINKLEY.

SOLE LEVELING MACHINE.

(Application filed Mar. 8, 1897.)

(No Model.) 2 Sheets-Sheet 2.

WITNB5SEE INVENTUR THE cams PETERS ca, PHOTOLITHO WASHINGTON n. c.

" UNITED STATES PATENT Enron.

ERASTUS E. WINKLEY, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE GOODYEAR SHOE MACHINERY COMPANY, or PORTLAND, MAINE.

SOLE-LEVEL! SPECIFICATION forming part of Letters Patent No. 610,314, dated September 6, 1898.

Application filed M rch 8, 18 97- a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sole-Leveling Machines and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in machines for leveling the soles of boots and shoes, and more particularly to such types of sole-leveling machines as embody in their structure a leveling-rollwhich is automatically-that is, without manual interference on the part of the operator-caused to pass over the surface of the sole of the boot or shoe While supported upon a suitable jack and to impart thereto the contour required in the finished product. As machines of the last-defined types have heretofore been constructed pressure has been obtained to enable the leveling-roll to perform its function by means of a suitably-arranged spring com monly secured to the leveling-roll carrier or its bed and bearing against a fixed abutment or support, the arrangement being such that While the leveling-roll during the operation of the machine is made to act upon all parts of the sole requiring the leveling operation under a certain amount of pressure such pressure varies as the roll is raised or lowered by contact with the work, or, to speak more specifically, in all former types of au tomatic leveling-machines an increased pressure of the roll is secured along the higher:

ball portions of the shoe (jacked in an inverted position) and a decreased pressure along the lower shank and toe portions. It is a well-known fact in the art of sole-leveling that it requires a greater amount of work to properly level the shank of a shoe-sole than it does to level the fore part, and the variation in pressure above suggested would therefore seem totend to prevent the successful operation of the machine. Thedifficulty last suggestedhas been to a great extent obviated in the prior art by causing the roll to dwell longer on the shank portion of the sole,

Serial No. 626,370. (No model.)

thus compensating for a loss in the power factor of the amount of work done by an increase of the time factor.

The object of the present invention is to remedy the above-suggested defects by prop erly controlling the action of the pressuremechanism, and thus to improve the quality of work done by machine, and, if desired, by decreasing the time factor to increase its output, and to the above end I have provided automatic means for controlling the pressure mechanism to secure a uniform pressure over the whole sole requiring the leveling operation or a change of pressure at such points quired.

The present invention is illustrated in the drawings herewith submitted, in which- Figure 1 is a side View of a sole-leveling machine embodying a preferred form there of, with parts broken out to more fully illus trate the same. Fig. 2 is a plan View also having parts broken away for a similar purpose, and Fig. 3 is a front View of a portion of pressure mechanism detached.

' Similar letters and figures of reference refer to similar parts throughout the several views.

In the drawings, A represents the levelingroll, B represents the shoe-supporting jack, and 0 represents a disk or wheel mounted upon the main shaft D of the machine and carrying the cam-paths c and c,which by suitable connections act to change the relative longitudinal position and lateral inclination of the roll and jack, so that the roll A, which is given a short vibratory motion by the crank wheel E and suitable connections, will propeling operation.

as hereinafter pointed out, substantially. the same in the form and arrangement of its parts as the machine shown and described in Letters Patent of the United States No. 540,223, issued May 28, 1895, to E. E. Winkley and B. Phillips, a detailed description of such parts as do not in themselves form any part of'the present invention is not deemed necessary herein, and the foregoing brief description is given merely for the purpose of more clearly erly contact with the sole to perform the lev-.

The machine of the drawings being, except explaining the connection of my present invention therewith.

In the machine of the drawings the leveling-roll A is mounted in a laterally-rocking roll-carrier a,which is mounted in a verticallytipping roll-carrier bed a, substantially as shown in said Letters Patent.

I also prefer to retain a portion of the pressure mechanism of said patented machine, and the present drawings illustrate the frame D -com risin the u er cross-head or yoke d, located above and near the outer end of the roll-carrier bed a, the lower cross-head 61 and the parallel vertical rods cl on each side of the carrier-bed a, connecting the yoke 61 with the lower cross-head d The drawings further illustrate the lower frame D comprising the upper cross-head- 01 the lower cross-head d, and their parallel connectingrods d also the movable cross-head d movable along said rods d and connected by a connecting-rod d with the cross-head (1 also the coiled spring 01 coiled about the rod d and bearing against the movable cross-head (Z and the upper cross-head d of the lower frame D alsothe threaded adjustment-bolt -d ,haVin g a correspondingly-threaded bearin g in the yoke cl, its lower end bearing upon the roll-carrier bed a and carrying at its upper end the operating-wheel d all of which parts may be and conveniently are similar to corresponding parts shown and described in said Letters Patent.

In said patented machine the lower crosshead 61 of the frame D is connected to a fixed portion of the machine, and the compression of the spring (:1 is varied, aside from the lifting action of the work on the roll, only by means of the adjustment-bolt d", which is operated by the wheel (Z which the operator must turn by hand. In accordance with the present invention I connect the lower crosshead 61 of the frame D with a verticallyswinging lever 2, preferably bymeans of a rod d projected from the cross-head d and pivoted upon a stud 2 laterally projected from the lever 2. The lever 2 is pivotally supported at 3 on a suitable stud or boss laterally projected from the frame of the machine. The lever 2 carries adjacent to its inner end a cam-roll 4, which is acted upon by a cam 5, which is mounted upon and rotates with the shaft D, the rotation of the cam 5 by means of the cam-roll 4E imparting to the lever 2 a vertically-swinging movement. The cam 5is preferably a peripheral cam, and the cam-roll 4 is held in contact therewith by the action of spring 01 The above-described arrangement is such that when the lever 2 is depressed it compresses spring d and brings an increased pressure upon the roll A, and when the lever 2 is allowed to rise it allows the spring d to expand and thereby diminishes the pressure exerted by the springs d on the roll A.

The timing of cam 5 can be best understood bya description of the operation of the machine, which in so far as it is material to the present invention is as follows: A shoe being placed upon jack B and the machine set in operation, the toe of the shoe is first presented to the roll, and as the toe is a relatively lower portion of the sole and exerts little lifting action on the roll A the cam 5 immediately acts to compress the spring d so that sufficient pressure will be obtained to properly level the toe as the roll passes off the toe onto the ball portion of the sole, which is commonly the higher part of the sole, the

lifting action of the work on the roll Atending of itself to compress spring 61 and increase the pressure. The further rotation of the cam 5 allows the lever 2 to rise and the spring 61 to expand to prevent an undue increase of pressure, which in styles of shoes having a very high ball would tend to injure the shoe. As the roll A passes off the ball onto the shank a further rotation of the cam 5 again depresses lever 2 and compresses spring 01 to compensate for a lack of compression by the lifting action of the work and preferably to, give an increased pressure to more quickly bring down the shank to the proper contour, the proper shaping of the shank being, as before stated, the most difficult part of the leveling operation. As the roll A returns to the ball portion of the shoe the cam 5 again allows the lever 2 to rise and depress it again at the toe, and the machine stops with the cam 5 in position to recommence the operations above noted.

By changing the form of cam 5 the above operation may be varied as desired. 7

In case of a machine comprising a plurality of jacks and rolls the mechanism described herein may be duplicated.

Having thus described my invention and its mode of operation, I desire to say that in so far as I am advised of the art I am the first to ever propose in machines of this class automatic means for regulating the pressure mechanism during the leveling operation. I do not therefore consider the present invention as limited to the details of mechanism herein shown and described nor to its application to the machine of the drawings; but

I claim as broadly novel and desire to secure by Letters Patent ofthe United States 1. In a sole-leveling machine, the combination with a leveling-roll and jack and their actuating mechanism, of means for securing pressure on the roll, and connected mechanism operating automatically upon the pressure-securin g means to regulate the same during the leveling operation, substantially as described.

2. In a sole-leveling machine, the combination with a leveling-roll and jack and their actuating mechanism, of aspring arranged to secure pressure of the leveling-roll and means for automatically regulating the tension of said spring substantially as described.

3. In a sole-leveling machine, the combination with a leveling-roll and jack, of a carrier 10 ments, a swinging carrier for said levelingroll, a lever, a cam for actuating said level, and a spring connection between the levelingroll carrier and said lever, substantially as described.

In testimony whereof I affix my signature :5

in presence of two witnesses.

- ERASTUS E. WINKLEY. Witnesses:

THOMAS H. ANDERSON, BENJAMIN PHILLIPS. 

